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We can roughly model a gymnastic tumbler as a uniform solid cylinder of mass 70.0kg and diameter 1.00m . A) If this tumbler rolls forward at 0.550 rev/s, how much total kinetic energy does he have? B) What percent of his total kinetic energy is rotational?
An energetic father stands at the summit of a conical hill as he spins his 21 child around on a 5.1 cart with a 2.1--long rope. The sides of the hill are inclined at 25 . He keeps the rope parallel to the ground, and friction is negligible. What rope..
a radiator has an emassivity of .90 and its exposed area is 1.23 m^2. The temperature of the radiator is 100 degrees C, What is the heat flow rate from the radiator
A firefighting crew uses a water cannon that shoots water at 29.0m at a fixed angle of 52.0 degrees above the horizontal. How far from the building should they position their cannon
A hoop and a disk, both of 0.48- m radius and 3.0- kg mass, are released from the top of an inclined plane 3.3 m high and 8.3 m long. What is the speed of the hoop
A 60.0kg swimmer stands at the edge of a 200kg boat that is motionless on the water of a lake. calculate the velocity of the boat if friction between the boat and the water is neglected
At a temperature of 1.66 °C, the mass and volume of a fluid are 798 kg and 1.20 m3. The coefficient of volume expansion is 1.58 x 10-3 (C°)-1. What is the density of the fluid at this temperature
there are certain big questions that philosophers have been puzzling over for millennia. amazingly many people ask
An 82.0 kg-diver stands at the edge of a light 5.00-m diving board, which is supported by two pillars 1.60 m apart, Find the force exerted by pillar B on the board
assume that thermometer readings are normally distributed with a mean of 0 and a standard deviation of 1. a thermometer
A step-down transformer is used for recharging the batteries of portable devices. calculate rms output voltage of the transformer
You put your morning coffee in a copper mug. Assuming the coffee is boiling hot (100 *C), what is the temperature of the cup of coffee
A parallel plate capacitor has an area of 0.40m^2 and a plate separation of 0.02m. What is the magnitude of the electric field in the region between the plates
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